20 POINTS PLEASE HELP A math student correctly solved the system of equations shown below using the inverse matrix.

3x+y=12x−3y=19

Which of the following methods did the student most likely use to find the solution to the system of equations?
A
[xy]=[3 2 1 −3][1 19]

B
[xy]=1−11[3 2 1 −3][1 19]

C
[xy]=[ −3− 2 −1 3][1 19]

D
[xy]=1−11[ −3− 2 −1 3][1 19]

Mr. walker gave his class the function f(x) = (x + 3)(x + 5). four students made a claim about the function. each student’s claim is below. jeremiah: the y-intercept is at (15, 0). lindsay: the x-intercepts are at (–3, 0) and (5, 0). stephen: the vertex is at (–4, –1). alexis: the midpoint between the x-intercepts is at (4, 0). which student’s claim about the function is correct?

If the table of the function contains exactly two potential turning points, one with an input value of –1, which statement best describes all possible values of m? m ≥ –12 –12 < m < 4 m ≤ 4 m ≥ 4 or m ≤ –12

Which of the following is true for the relation f(x)=2x^2+1